I just checked the dimensions of the radio cage. It is 7-1/16" wide, 4" tall, and 6-5/8" deep. The space between the cage and the radio cover door (closed) is between 7/8" and 2".
http://www.geocities.com/svxdc/Audio...2-RadioRemoval ; Section 2.4.1.
That should be a perfect fit for any double-DIN standard size unit.